package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnum;
import com.atguigu.common.utils.Constant;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartFeignService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {


    @Autowired
    ThirdPartFeignService thirdPartFeignService;

    @Autowired
    StringRedisTemplate stringRedisTemplate;

    @Autowired
    MemberFeignService memberFeignService;


    @GetMapping("login.html")
    public String loginPage(HttpSession session){
        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if (attribute == null){
            return "login";
        }else{
            return "redirect:http://gulimall.com";
        }
    }


    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes,
                        HttpSession session){

        R login = memberFeignService.login(vo);
        if (login.getCode() == 0){
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });

            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://gulimall.com";
        }else {
            Map<String,String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }


    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("phone") String phone){

        // todo 1接口防刷

        //2验证码的再次校验 redis
        String redisCode = stringRedisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if(!StringUtils.isEmpty(redisCode)){
            long l = Long.parseLong(redisCode.split("_")[1]);
            if(System.currentTimeMillis() - l < 60000){
                //60s内不能再发
                return R.error(BizCodeEnum.SMS_CODE_EXCEPTION.getCode(), BizCodeEnum.SMS_CODE_EXCEPTION.getMessage());
            }
        }


        String code = UUID.randomUUID().toString().substring(0,4)+"_"+System.currentTimeMillis();
        String sendCode = code.substring(0,4);
        //redis缓存验证码  防止同一个phone在60秒内再次发送验证码
        stringRedisTemplate.opsForValue().set(
                AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone,
                code,10, TimeUnit.MINUTES);
        thirdPartFeignService.sendCode(phone,sendCode);
        return R.ok();
    }


    @PostMapping(value = "/regist")
    public String register(@Valid UserRegistVo vo, BindingResult result,
                           RedirectAttributes attributes) {

        //如果有错误回到注册页面
        if (result.hasErrors()) {
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
            attributes.addFlashAttribute("errors",errors);

            //效验出错回到注册页面
            return "redirect:http://auth.gulimall.com/reg.html";
        }


        //注册, 调用远程服务注册
        //校验验证码
        String code = vo.getCode();
        String s = stringRedisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX+vo.getPhone());
        if (!StringUtils.isEmpty(s)) {

            if (code.equals(s.split("_")[0])){
                //删除验证码  令牌机制
                stringRedisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());

                //验证码通过  调用远程方法进行注册
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0){
                    return "redirect:http://auth.gulimall.com/login.html";
                }else {
                    Map<String ,String> errors = new HashMap<>();
                    errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
                    attributes.addFlashAttribute("errors",errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }

            }else{
                Map<String,String> errors = new HashMap<>();
                errors.put("code","验证码错误");
                attributes.addFlashAttribute("errors",errors);
                //效验出错回到注册页面
                return "redirect:http://auth.gulimall.com/reg.html";

            }
        }else {
            Map<String,String> errors = new HashMap<>();
            errors.put("code","验证码错误");
            attributes.addFlashAttribute("errors",errors);


            //效验出错回到注册页面
            return "redirect:http://auth.gulimall.com/reg.html";

        }

    }




}













